Operation CHARM
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Porsche
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1990
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928 GT V8-4957cc 5.0L
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Repair and Diagnosis
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Relays and Modules
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Relays and Modules - Powertrain Management
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Relays and Modules - Computers and Control Systems
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Electronic Spark Control Module
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Technical Service Bulletins
Electronic Spark Control Module: Technical Service Bulletins
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Ignition Monitoring System - Diagnosis